Meadows are of ecological importance because they are open, sunny areas that attract and support flora and fauna that could not thrive in other conditions. Meadows may be naturally occurring or artificially created from cleared shrub or woodland, they often host a multitude of wildlife, providing areas for courtship displays, nesting, food gathering and sometimes sheltering if the vegetation is high enough. Many meadows support a wide array of wildflowers, which makes them of utmost importance to pollinating insects, including bees, and hence the entire ecosystem.

In agriculture, a meadow is grassland which is not regularly grazed by domestic livestock, but rather allowed to grow unchecked in order to produce hay.

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Especially in the United Kingdom and Ireland, the term meadow is commonly used in its original sense to mean a hay meadow, signifying grassland mown annually in the summer for making hay. Agricultural meadows are typically lowland or upland fields upon which hay or pasture grasses grow from self-sown or hand-sown seed.[2] Traditional hay meadows were once common in rural Britain, but are now in decline. Ecologist Professor John Rodwell states that over the past century, England and Wales have lost about 97% of their hay meadows.[3] Fewer than 15.000 hectares of lowland meadows remain in the UK and most sites are relatively small and fragmented. 25% of the UK's meadows are found in Worcestershire, with Foster's Green Meadow managed by the Worcestershire Wildlife Trust being a major site. [4]

A similar concept to the hay meadow is the pasture, which differs from the meadow in that it is grazed through the summer, rather than being allowed to grow out and periodically be cut for hay.[2] A pasture can also refer to any land used for grazing, and in this wider sense the term refers not only to grass pasture, but also to non-grassland habitats such as heathland, moorland and wood pasture.[5] The term, grassland, is used to describe both hay meadows and grass pastures.

The specific agricultural practices in relation to the meadow can take on various expressions, as mentioned, this could be hay production or providing food for grazing cattle and livestock but also to give room for orchards or honey production.

A transitional meadow occurs when a field, pasture, farmland, or other cleared land is no longer cut or grazed and starts to display luxuriant growth, extending to the flowering and self-seeding of its grass and wild flower species.[6] The condition is however only temporary, because the grasses eventually become shaded out when scrub and woody plants become well-established, being the forerunners of the return to a fully wooded state.[7] A transitional state can be artificially-maintained through a double-field system, in which cultivated soil and meadows are alternated for a period of 10 to 12 years each.[6]

A perpetual meadow, also called a natural meadow, is one in which environmental factors, such as climatic and soil conditions, are favorable to perennial grasses and restrict the growth of woody plants indefinitely.[9] Types of perpetual meadows may include:

Apart from the perpetual meadows, meadows are often conceived of as artificial or cultural habitats, since they have emerged from and continually require human intervention to persist and flourish, it can be argued however, that meadows are really semi-cultural habitats and not entirely cultural. The reason is, that in many places the natural, pristine populations of free roaming large grazers are either extinct or very limited due to human activities, this reduces or removes their natural influence on the surrounding ecology and results in meadows only being created or maintained by human intervention.[10] It is true that in many places the existing meadows would gradually disappear if not artificially maintained by mainly agricultural practices, but with a reintroduction of natural populations of large grazers, meadows could again reappear as natural habitats in the landscape.[11][12] Mankind has influenced the ecology and the landscape for millennia in many parts of the world, so it can sometimes be difficult to discern what is natural and what is cultural.[13] Meadows are one example.

As extensive farming like grazing is diminishing in some parts of the world, the meadow is endangered as a habitat, some scientific projects are therefore experimenting with reintroduction of natural grazers.[10] This includes deer, elk, goat, wild horse, etc. depending on the location. A more exotic example with a wider scope, is the European Tauros Programme.

1.
Habitat
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A habitat is an ecological or environmental area that is inhabited by a particular species of animal, plant, or other type of organism. The term typically refers to the zone in which the organism lives and it is the natural environment in which an organism lives, or the physical environment that surrounds a species population. Every organism has certain habitat needs for the conditions in which it will thrive, habitat types include polar, temperate, subtropical and tropical. The terrestrial vegetation type may be forest, steppe, grassland, the word habitat has been in use since about 1755 and derives from the Latin third-person singular present indicative of habitāre, to inhabit, from habēre, to have or to hold. Habitat can be defined as the environment of an organism. It is similar in meaning to a biotope, an area of environmental conditions associated with a particular community of plants. Generally speaking, animal communities are reliant on specific types of plant communities, some plants and animals are generalists, and their habitat requirements are met in a wide range of locations. The small white butterfly for example is found on all the continents of the world apart from Antarctica and its larvae feed on a wide range of Brassicas and various other plant species, and it thrives in any open location with diverse plant associations. Disturbance is important in the creation of biodiverse habitats, in the absence of disturbance, a climax vegetation cover develops that prevents the establishment of other species. Lightning strikes and toppled trees in tropical forests allow species richness to be maintained as pioneering species move in to fill the gaps created. Similarly coastal habitats can become dominated by kelp until the seabed is disturbed by a storm, another cause of disturbance is when an area may be overwhelmed by an invasive introduced species which is not kept under control by natural enemies in its new habitat. Terrestrial habitat types include forests, grasslands, wetlands and deserts, within these broad biomes are more specific habitats with varying climate types, temperature regimes, soils, altitudes and vegetation types. Many of these habitats grade into each other and each one has its own communities of plants. A habitat may suit a particular species well, but its presence or absence at any particular location depends to some extent on chance, on its dispersal abilities, freshwater habitats include rivers, streams, lakes, ponds, marshes and bogs. Although some organisms are found across most of these habitats, the majority have more specific requirements, similarly, aquatic plants can be floating, semi-submerged, submerged or grow in permanently or temporarily saturated soils besides bodies of water. Marine habitats include brackish water, estuaries, bays, the sea, the intertidal zone. Further variations include rock pools, sand banks, mudflats, brackish lagoons, sandy and pebbly beaches, the benthic zone or seabed provides a home for both static organisms, anchored to the substrate, and for a large range of organisms crawling on or burrowing into the surface. A desert is not the kind of habitat that favours the presence of amphibians, with their requirement for water to keep their skins moist, nevertheless, some frogs live in deserts, creating moist habitats underground and hibernating while conditions are adverse

2.
Poaceae
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Poaceae or Gramineae is a large and nearly ubiquitous family of monocotyledonous flowering plants known as grasses. Poaceae includes the cereal grasses, bamboos and the grasses of natural grassland and cultivated lawns, Grasses have stems that are hollow except at the nodes and narrow alternate leaves borne in two ranks. The lower part of each leaf encloses the stem, forming a leaf-sheath, with ca 780 genera and around 12,000 species, Poaceae are the fifth-largest plant family, following the Asteraceae, Orchidaceae, Fabaceae and Rubiaceae. Grasslands such as savannah and prairie grasses are dominant are estimated to constitute 40. 5% of the land area of the Earth, excluding Greenland. Grasses are also an important part of the vegetation in many habitats, including wetlands, forests. Though commonly called grasses, seagrasses, rushes, and sedges fall outside this family, the rushes and sedges are related to the Poaceae, being members of the order Poales, but the seagrasses are members of order Alismatales. The name Poaceae was given by John Hendley Barnhart in 1895, based on the tribe Poeae described in 1814 by Robert Brown, the term is derived from the Ancient Greek πόα. Grasses include some of the most versatile plant life-forms, a cladogram shows subfamilies and approximate species numbers in brackets, Before 2005, fossil findings indicated that grasses evolved around 55 million years ago. Recent findings of grass-like phytoliths in Cretaceous dinosaur coprolites have pushed this back to 66 million years ago. In 2011, revised dating of the origins of the rice tribe Oryzeae suggested a date as early as 107 to 129 Mya, a multituberculate mammal with grass-eating adaptations seems to suggest that grasses were already around at 120 mya. This separation occurred within the short time span of about 4 million years. Grass leaves are always alternate and distichous, and have parallel veins. Each leaf is differentiated into a lower sheath hugging the stem, the leaf blades of many grasses are hardened with silica phytoliths, which discourage grazing animals, some, such as sword grass, are sharp enough to cut human skin. A membranous appendage or fringe of hairs called the ligule lies at the junction between sheath and blade, preventing water or insects from penetrating into the sheath, flowers of Poaceae are characteristically arranged in spikelets, each having one or more florets. The spikelets are further grouped into panicles or spikes, the part of the spikelet that bears the florets is called the rachilla. A spikelet consists of two bracts at the base, called glumes, followed by one or more florets, a floret consists of the flower surrounded by two bracts, one external—the lemma—and one internal—the palea. The flowers are usually hermaphroditic—maize being an important exception—and anemophilous or wind-pollinated, the perianth is reduced to two scales, called lodicules, that expand and contract to spread the lemma and palea, these are generally interpreted to be modified sepals. This complex structure can be seen in the image on the right, the fruit of grasses is a caryopsis, in which the seed coat is fused to the fruit wall

3.
Woody plant
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A woody plant is a plant that produces wood as its structural tissue. Woody plants are usually either trees, shrubs, or lianas and these are usually perennial plants whose stems and larger roots are reinforced with wood produced from secondary xylem. The main stem, larger branches, and roots of plants are usually covered by a layer of bark. Wood is a structural cellular adaptation that allows plants to grow from above ground stems year after year. Wood is primarily composed of cells with cell walls made of cellulose. Xylem is a vascular tissue which moves water and nutrients from the roots to the leaves, however, in some monocotyledons such as palms and dracaenas, the wood is formed in bundles scattered through the interior of the trunk. Woody herbs are herbaceous plants that develop hard woody stems and they include such plants as Uraria picta and certain species in family Polygonaceae. These herbs are not truly woody but have densely packed stem tissue. Other herbaceous plants have woody stems called a caudex, which is a stem base often found in plants that grow in alpine or dry environments. Under specific conditions, woody plants may decay or may in time become petrified wood, the symbol for a woody plant, based on Species Plantarum by Linnaeus is, which is also the astronomical symbol for the planet Saturn

4.
Grassland
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Grasslands are areas where the vegetation is dominated by grasses, however sedge and rush families can also be found. Grasslands occur naturally on all continents except Antarctica, grasslands are found in most ecoregions of the Earth. For example, there are five terrestrial ecoregion classifications of the grasslands, savannas, and shrublands biome. Grassland vegetation can vary in height from short, as in chalk grassland, to quite tall, as in the case of North American tallgrass prairie, South American grasslands. Woody plants, shrubs or trees, may occur on some grasslands – forming savannas, scrubby grassland or semi-wooded grassland, as flowering plants and trees, grasses grow in great concentrations in climates where annual rainfall ranges between 500 and 900 mm. The root systems of perennial grasses and forbs form complex mats that hold the soil in place, graminoids are among the most versatile life forms. Existing forest biomes declined, and grasslands became much more widespread, following the Pleistocene ice ages, grasslands expanded in range in the hotter, drier climates, and began to become the dominant land feature worldwide. Grasslands often occur in areas with annual precipitation between 600 mm and 1,500 mm and average annual temperatures ranges from −5 and 20 °C. However, some occur in colder and hotter climatic conditions. Grassland can exist in habitats that are disturbed by grazing or fire. Grasslands dominated by unsown wild-plant communities can be called natural or semi-natural habitats. The majority of grasslands in temperate climates are semi-natural and these grasslands contain many species of wild plants – grasses, sedges, rushes and herbs –25 or more species per square metre is not unusual. Chalk downlands in England can support over 40 species per square metre, in many parts of the world, few examples have escaped agricultural improvement. For example, original North American prairie grasslands or lowland wildflower meadows in the UK are now rare and their associated wild flora equally threatened. Some of the worlds largest expanses of grassland are found in African savanna, grasslands may occur naturally or as the result of human activity. Grasslands created and maintained by human activity are called anthropogenic grasslands, hunting peoples around the world often set regular fires to maintain and extend grasslands, and prevent fire-intolerant trees and shrubs from taking hold. The tallgrass prairies in the U. S. Midwest may have been extended eastward into Illinois, Indiana, much grassland in northwest Europe developed after the Neolithic Period, when people gradually cleared the forest to create areas for raising their livestock. Grassland types by Schimper, meadow steppe savannah Grassland types by Ellenberg & Mueller-Dombois, terrestrial herbaceous communities A. Savannas and related grasslands B

5.
Ecology
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Ecology is the scientific analysis and study of interactions among organisms and their environment. It is a field that includes biology, geography. Ecology includes the study of interactions that organisms have with other, other organisms. Ecosystems are composed of dynamically interacting parts including organisms, the communities make up. Ecosystem processes, such as production, pedogenesis, nutrient cycling. These processes are sustained by organisms with specific life history traits, biodiversity, which refers to the varieties of species, genes, and ecosystems, enhances certain ecosystem services. Ecology is not synonymous with environment, environmentalism, natural history and it is closely related to evolutionary biology, genetics, and ethology. An important focus for ecologists is to improve the understanding of how biodiversity affects ecological function, Ecology is a human science as well. For example, the Circles of Sustainability approach treats ecology as more than the environment out there and it is not treated as separate from humans. Organisms and resources compose ecosystems which, in turn, maintain biophysical feedback mechanisms that moderate processes acting on living and non-living components of the planet, the word ecology was coined in 1866 by the German scientist Ernst Haeckel. Ecological thought is derivative of established currents in philosophy, particularly from ethics and politics, ancient Greek philosophers such as Hippocrates and Aristotle laid the foundations of ecology in their studies on natural history. Modern ecology became a more rigorous science in the late 19th century. Evolutionary concepts relating to adaptation and natural selection became the cornerstones of modern ecological theory, the scope of ecology contains a wide array of interacting levels of organization spanning micro-level to a planetary scale phenomena. Ecosystems, for example, contain abiotic resources and interacting life forms, an ecosystems area can vary greatly, from tiny to vast. A single tree is of consequence to the classification of a forest ecosystem. Several generations of a population can exist over the lifespan of a single leaf. Each of those aphids, in turn, support diverse bacterial communities, biodiversity describes the diversity of life from genes to ecosystems and spans every level of biological organization. The term has several interpretations, and there are ways to index, measure, characterize

6.
Woodland
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Woodland /ˈwʊdlənd/ is a low-density forest forming open habitats with plenty of sunlight and limited shade. Woodlands may support an understory of shrubs and herbaceous plants including grasses, woodland may form a transition to shrubland under drier conditions or during early stages of primary or secondary succession. Higher density areas of trees with a closed canopy that provides extensive. Conservationists have worked hard to preserve woodlands, because people are destroying animals habitats when building homes, for example, the woodlands in Northwest Indiana have been preserved as part of the Indiana Dunes. The term ancient woodland is used in British nature conservation to refer to any wooded land that has existed since 1600, woodlot is a closely related American term, which refers to a stand of trees generally used for firewood. While woodlots often technically have closed canopies, they are so small that light penetration from the edge makes them ecologically closer to woodland than forest, in Australia, a woodland is defined as an area with sparse cover of trees, and an open woodland has very sparse cover. Woodlands are also subdivided into tall woodlands, or low woodlands and this contrasts with forests, which have greater than 30% cover by trees

7.
Wildlife
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Wildlife traditionally refers to undomesticated animal species, but has come to include all plants, fungi, and other organisms that grow or live wild in an area without being introduced by humans. Wildlife can be found in all ecosystems, humans have historically tended to separate civilization from wildlife in a number of ways including the legal, social, and moral sense. Some animals, however, have adapted to suburban environments and this includes such animals as domesticated cats, dogs, mice, and gerbils. The global wildlife population has decreased by 52 percent between 1970 and 2014, according to a report by the World Wildlife Fund, anthropologists believe that the Stone Age people and hunter-gatherers relied on wildlife, both plants and animals, for their food. In fact, some species may have been hunted to extinction by human hunters. Today, hunting, fishing, and gathering wildlife is still a significant food source in parts of the world. In other areas, hunting and non-commercial fishing are seen as a sport or recreation. Meat sourced from wildlife that is not traditionally regarded as game is known as bush meat, in November 2008, almost 900 plucked and oven-ready owls and other protected wildlife species were confiscated by the Department of Wildlife and National Parks in Malaysia, according to TRAFFIC. The animals were believed to be bound for China, to be sold in wild meat restaurants, most are listed in CITES which prohibits or restricts such trade.60. Many Amazon species, including peccaries, agoutis, turtles, turtle eggs, anacondas, armadillos, others in these informal markets, such as monkeys and parrots, are destined for the pet trade, often smuggled into the United States. Still other Amazon species are popular ingredients in traditional medicines sold in local markets, the medicinal value of animal parts is based largely on superstition. Many animal species have spiritual significance in different cultures around the world, for example, eagles, hawks and their feathers have great cultural and spiritual value to Native Americans as religious objects. In Hinduism the cow is regarded sacred, muslims conduct sacrifices on Eid-ul-Adha to commemorate the sacrificial spirit of Ibrahim in love of God. Camels, sheep, goats, and cows may be offered as sacrifice during the three days of Eid, many nations have established their tourism sector around their natural wildlife. South Africa has, for example, many opportunities for tourists to see the wildlife in its national parks. In South India the Periar Wildlife Sanctuary, Bandipur National Park and Mudamalai Wildlife Sanctuary are situated around, India is home to many national parks and wildlife sanctuaries showing the diversity of its wildlife, much of its unique fauna, and excels in the range. This subsection focuses on forms of wildlife destruction. Exploitation of wild populations has been a characteristic of man since our exodus from Africa 130,000 –70,000 years ago

8.
Courtship display
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A courtship display is a set of display behaviors in which an animal attempts to attract a mate and exhibit their desire to copulate. These behaviors often include ritualized movement, vocalizations, mechanical production, or displays of beauty, strength. In most species, the male is the sex that initiates courtship displays in pre-copulatory sexual selection, performing a display allows the male to present his traits or abilities to a female. Mate choice, in context, is driven by females. Direct or indirect benefits are often key deciding factors in which males get to copulate, direct benefits can be seen due to the expression of preference. Females can raise their own if they prefer to respond to particular types of signals, independent of costs. For example, choosing to mate with males that produce more localized signals would incur less of an investment for a female as she searches for a mate. On the other hand, females can put in more energy towards this process, with this, the males being chosen may impose lower costs on the female or even provide more in terms of material or offspring contributions. Indirect benefits are benefits that may not directly affect the parents fitness and this stimulation, along with many other factors, results in subsequent copulation or rejection. In some species, males initiate courtship rituals only after mounting the female, courtship may even continue after copulation has been completed. In this systems, the ability of the female to choose their mates is limited and this process, known as copulatory courtship, is prevalent in many insect species. Female courtship display is common in nature as a female would have to invest a lot of energy into both exaggerated traits and in their energetically expensive gametes. However, situations in males are the sexually selective sex in a species do occur in nature. Male choice in reproduction can arise if males are the sex in a species that are in supply, for example. This could arise in mating systems where reproducing comes at an energy cost to males, such energy costs can include the effort associated in obtaining nuptial gifts for the female or performing long courtship or copulatory behaviors. An added cost from these time and energy investment may come in the form of increased mortality rates. In pipefish, females use a temporary ornament, a striped pattern, in this case, the female of a species developed a sexually selected signal which serves a dual function of being both attractive to mates and deterring rivals. Many species of animals engage in some type of display to attract a mate, such as dancing

9.
Nest
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A nest is a structure built by certain animals to hold its eggs, its offspring, or occasionally the animal itself. Although nests are most closely associated with birds, members of all classes of vertebrates and some invertebrates construct nests. They may be composed of material such as twigs, grass. Human-made materials, such as string, plastic, cloth, or paper, nests can be found in all types of habitat. Nest building is driven by a biological urge known as the instinct in birds. Generally each species has a style of nest. Nest complexity is roughly correlated with the level of care by adults. Nests of prairie dogs and several social insects can host millions of individuals, Nest building is often driven by a biological urge in pregnant animals to protect ones offspring known as the nesting instinct. Animals build nests to protect their eggs, their offspring, or themselves from danger, the simplest nests are designed to hide eggs from predators, shield them from the sun or other environmental factors, or simply keep them from being scattered in ocean currents. In some cases, nests also provide safety in numbers for egg-laying animals. Many nest builders provide parental care to their young, while others lay their eggs. In general, nest complexity increases in relation to the level of care provided. Nest building reinforces social behavior, allowing for larger populations in small spaces to the point of increasing the capacity of an environment. Insects that exhibit the most complex nest building also exhibit the greatest social structure, among mammals, the naked mole-rat displays a caste structure similar to the social insects while building extensive burrows that house hundreds of individuals. At the most basic level, there are two types of nest building, sculpting and assembly. Sculpting is the process of removing material to achieve a desired outcome, most commonly this entails burrowing into the ground or plant matter to create a nesting site. Assembly entails gathering, transporting, and arranging materials to create a novel structure, transportation has the greatest time and energy cost so animals are usually adapted to build with materials available in their immediate environment. Versatility in use of material may be an adaptive advantage or a disadvantage

10.
Wildflower
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A wildflower is a flower that grows in the wild, meaning it was not intentionally seeded or planted. Yet wildflower meadows of a few mixed species are sold in seed packets, the term can refer to the flowering plant as a whole, even when not in bloom, and not just the flower. Wildflower is not an exact term, terms like native species, exotic or, better, introduced species, of which some are labelled invasive species, imported and naturalized are much more accurate. The aim was to spread awareness of the heritage of native species and about the need for conservation, for example, Somerset has adopted the Cheddar Pink, London the Rosebay Willowherb and Denbighshire/Sir Ddinbych in Wales the rare Limestone Woundwort. Formerly published by the North American Native Plant Society Plantlife, UK organisation Wildflower in Cyprus Information on 1250 native plant species to North Cyprus

11.
Pollination
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Pollination is the process by which pollen is transferred to the female reproductive organs of a plant, thereby enabling fertilization to take place. Like all living organisms, seed plants have a major goal. The reproductive unit is the seed, and pollination is a step in the production of seeds in all spermatophytes. The process is different in angiosperms from what it is in gymnosperms. In angiosperms, after the grain has landed on the stigma. Sperm cells from the pollen grain then move along the tube, enter the egg cell through the micropyle and fertilise it. A successful angiosperm pollen grain containing the gametes is transported to the stigma. Its two gametes travel down the tube to where the containing the female gametes are held within the carpel. One nucleus fuses with the bodies to produce the endosperm tissues. In gymnosperms, the ovule is not contained in a carpel, details of the process vary according to the division of gymnosperms in question. Two main modes of fertilization are found in gymnosperms, the study of pollination brings together many disciplines, such as botany, horticulture, entomology, and ecology. The pollination process as an interaction between flower and pollen vector was first addressed in the 18th century by Christian Konrad Sprengel and it is important in horticulture and agriculture, because fruiting is dependent on fertilization, the result of pollination. The study of pollination by insects is known as anthecology, pollen germination has three stages, hydration, activation and pollen tube emergence. The pollen grain is severely dehydrated so that its mass is reduced enabling it to be easily transported from flower to flower. Germination only takes place after rehydration, ensuring that premature germination does not take place in the anther, hydration allows the plasma membrane of the pollen grain to reform into its normal bilayer organization providing an effective osmotic membrane. Activation involves the development of actin filaments throughout the cytoplasm of the cell, hydration and activation continue as the pollen tube begins to grow. In conifers, the structures are borne on cones. The cones are either pollen cones or ovulate cones, but some species are monoecious, a pollen cone contains hundreds of microsporangia carried on reproductive structures called sporophylls

12.
Bee
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Bees are flying insects closely related to wasps and ants, known for their role in pollination and, in the case of the best-known bee species, the European honey bee, for producing honey and beeswax. Bees are a lineage within the superfamily Apoidea, presently considered as a clade Anthophila. There are nearly 20,000 known species of bees in seven to nine recognized families, though many are undescribed and they are found on every continent except Antarctica, in every habitat on the planet that contains insect-pollinated flowering plants. Some species including honey bees, bumblebees, and stingless bees live socially in colonies, Bees are adapted for feeding on nectar and pollen, the former primarily as an energy source and the latter primarily for protein and other nutrients. Most pollen is used as food for larvae, Bee pollination is important both ecologically and commercially, the decline in wild bees has increased the value of pollination by commercially managed hives of honey bees. The most common bees in the Northern Hemisphere are the Halictidae, or sweat bees, vertebrate predators of bees include birds such as bee-eaters, insect predators include beewolves and dragonflies. Human beekeeping or apiculture has been practised for millennia, since at least the times of Ancient Egypt, apart from honey and pollination, honey bees produce beeswax, royal jelly and propolis. Bees have appeared in mythology and folklore, again since ancient times, and they feature in works of literature as varied as Virgils Georgics, Beatrix Potters The Tale of Mrs Tittlemouse, yeatss poem The Lake Isle of Innisfree. Bee larvae are included in the Javanese dish botok tawon, where they are steamed with shredded coconut. The ancestors of bees were wasps in the family Crabronidae, which were predators of other insects. The switch from insect prey to pollen may have resulted from the consumption of insects which were flower visitors and were partially covered with pollen when they were fed to the wasp larvae. This same evolutionary scenario may have occurred within the vespoid wasps, until recently, the oldest non-compression bee fossil had been found in New Jersey amber, Cretotrigona prisca of Cretaceous age, a corbiculate bee. A bee fossil from the early Cretaceous, Melittosphex burmensis, is considered an extinct lineage of pollen-collecting Apoidea sister to the modern bees. Derived features of its place it clearly within the bees. By the Eocene there was considerable diversity among eusocial bee lineages. The highly eusocial corbiculate Apidae appeared roughly 87 Mya, and the Allodapini around 53 Mya, the Colletidae appear as fossils only from the late Oligocene to early Miocene. The Melittidae are known from Palaeomacropis eocenicus in the Early Eocene, the Megachilidae are known from trace fossils from the Middle Eocene. The Andrenidae are known from the Eocene-Oligocene boundary, around 34 Mya, the Halictidae first appear in the Early Eocene with species found in amber

13.
Ecosystem
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An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are regarded as linked together through nutrient cycles, as ecosystems are defined by the network of interactions among organisms, and between organisms and their environment, they can be of any size but usually encompass specific, limited spaces. Energy, water, nitrogen and soil minerals are other essential components of an ecosystem. The energy that flows through ecosystems is obtained primarily from the sun and it generally enters the system through photosynthesis, a process that also captures carbon from the atmosphere. By feeding on plants and on one another, animals play an important role in the movement of matter and they also influence the quantity of plant and microbial biomass present. Ecosystems are controlled both by external and internal factors, other external factors include time and potential biota. Ecosystems are dynamic entities—invariably, they are subject to disturbances and are in the process of recovering from some past disturbance. Ecosystems in similar environments that are located in different parts of the world can have different characteristics simply because they contain different species. The introduction of species can cause substantial shifts in ecosystem function. Internal factors not only control ecosystem processes but are controlled by them and are often subject to feedback loops. Other internal factors include disturbance, succession and the types of species present, although humans exist and operate within ecosystems, their cumulative effects are large enough to influence external factors like climate. Biodiversity affects ecosystem function, as do the processes of disturbance, classifying ecosystems into ecologically homogeneous units is an important step towards effective ecosystem management, but there is no single, agreed-upon way to do this. The term ecosystem was first used in 1935 in a publication by British ecologist Arthur Tansley, Tansley devised the concept to draw attention to the importance of transfers of materials between organisms and their environment. He later refined the term, describing it as The whole system, including not only the organism-complex, but also the whole complex of physical factors forming what we call the environment. Tansley regarded ecosystems not simply as natural units, but as mental isolates, Tansley later defined the spatial extent of ecosystems using the term ecotope. G. Raymond Lindeman took these ideas one step further to suggest that the flow of energy through a lake was the driver of the ecosystem. Most mineral nutrients, on the hand, are recycled within ecosystems. Ecosystems are controlled both by external and internal factors, external factors, also called state factors, control the overall structure of an ecosystem and the way things work within it, but are not themselves influenced by the ecosystem

14.
Agriculture
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Agriculture is the cultivation and breeding of animals, plants and fungi for food, fiber, biofuel, medicinal plants and other products used to sustain and enhance human life. Agriculture was the key development in the rise of human civilization. The study of agriculture is known as agricultural science, the history of agriculture dates back thousands of years, and its development has been driven and defined by greatly different climates, cultures, and technologies. Industrial agriculture based on large-scale monoculture farming has become the dominant agricultural methodology, genetically modified organisms are an increasing component of agriculture, although they are banned in several countries. Agricultural food production and water management are increasingly becoming global issues that are fostering debate on a number of fronts, the major agricultural products can be broadly grouped into foods, fibers, fuels, and raw materials. Specific foods include cereals, vegetables, fruits, oils, meats, fibers include cotton, wool, hemp, silk and flax. Raw materials include lumber and bamboo, other useful materials are also produced by plants, such as resins, dyes, drugs, perfumes, biofuels and ornamental products such as cut flowers and nursery plants. The word agriculture is a late Middle English adaptation of Latin agricultūra, from ager, field, Agriculture usually refers to human activities, although it is also observed in certain species of ant, termite and ambrosia beetle. To practice agriculture means to use resources to produce commodities which maintain life, including food, fiber, forest products, horticultural crops. This definition includes arable farming or agronomy, and horticulture, all terms for the growing of plants, even then, it is acknowledged that there is a large amount of knowledge transfer and overlap between silviculture and agriculture. In traditional farming, the two are often combined even on small landholdings, leading to the term agroforestry, Agriculture began independently in different parts of the globe, and included a diverse range of taxa. At least 11 separate regions of the Old and New World were involved as independent centers of origin, wild grains were collected and eaten from at least 105,000 years ago. Pigs were domesticated in Mesopotamia around 15,000 years ago, rice was domesticated in China between 13,500 and 8,200 years ago, followed by mung, soy and azuki beans. Sheep were domesticated in Mesopotamia between 13,000 and 11,000 years ago. From around 11,500 years ago, the eight Neolithic founder crops, emmer and einkorn wheat, hulled barley, peas, lentils, bitter vetch, chick peas and flax were cultivated in the Levant. Cattle were domesticated from the aurochs in the areas of modern Turkey. In the Andes of South America, the potato was domesticated between 10,000 and 7,000 years ago, along with beans, coca, llamas, alpacas, sugarcane and some root vegetables were domesticated in New Guinea around 9,000 years ago. Sorghum was domesticated in the Sahel region of Africa by 7,000 years ago, cotton was domesticated in Peru by 5,600 years ago, and was independently domesticated in Eurasia at an unknown time

15.
Grazing
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Grazing is a method of feeding in which a herbivore feeds on plants such as grasses, or other multicellular organisms such as algae. In agriculture, grazing is one method used whereby domestic livestock are used to convert grass and other forage into meat, milk, many small selective herbivores follow larger grazers, who skim off the highest, tough growth of plants, exposing tender shoots. For terrestrial animals, grazing is normally distinguished from browsing in that grazing is eating grass or forbs, Grazing differs from true predation because the organism being grazed upon is not generally killed. Grazing differs from parasitism as the two live together in a constant state of physical externality. Water animals that feed for example on algae found on stones are called grazers-scrapers, grazers-scrapers feed also on microorganisms and dead organic matter on various substrates. Grazing is a method of feeding in which a herbivore feeds on such as grasses. In zoology, graminivory is a form of grazing, a graminivore is an herbivorous animal that feeds primarily on grass. The word is derived from Latin graminis, meaning grass, and vorare, horses, cattle, capybara, hippopotamuses, grasshoppers, geese, and giant pandas are examples of graminivores. Some carnivores, such as dogs and cats, are known to eat grass occasionally, giant pandas have evolved to be obligate bamboo grazers, and 99% of their diet consists of sub-alpine bamboo species. Rabbits are herbivores that feed by grazing on grass, forbs and they graze heavily and rapidly for about the first half-hour of a grazing period, followed by about half an hour of more selective feeding. If the environment is relatively non-threatening, the rabbit will remain outdoors for many hours and their diet contains large amounts of cellulose, which is hard to digest. Rabbits solve this problem by using a form of hindgut fermentation and they pass two distinct types of feces, hard droppings and soft black viscous pellets, the latter of which are known as caecotrophs and are immediately eaten. Rabbits reingest their own droppings to digest their food further and extract sufficient nutrients, capybara are herbivores that graze mainly on grasses and aquatic plants, as well as fruit and tree bark. As with other grazers, they can be selective and will feed on the leaves of one species. They eat a variety of plants during the dry season. While they eat grass during the wet season, they have to switch to more abundant reeds during the dry season, the capybaras jaw hinge is not perpendicular and therefore they chew food by grinding back-and-forth rather than side-to-side. Capybara are coprophagous, as a source of gut flora, to help digest the cellulose in the grass that forms their normal diet. They may also regurgitate food to masticate again, similar to cud-chewing by a cow, as with other rodents, the front teeth of capybara grow continually to compensate for the constant wear from eating grasses, their cheek teeth also grow continuously

16.
Hay
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Hay is grass, legumes, or other herbaceous plants that have been cut, dried, and stored for use as animal fodder, particularly for grazing animals such as cattle, horses, goats, and sheep. Hay is also fed to animals such as rabbits and guinea pigs. Pigs may be fed hay, but they do not digest it as efficiently as more fully herbivorous animals and it is also fed during times when an animal is unable to access pasture, such as when animals are kept in a stable or barn. Commonly used plants for hay include mixtures of such as ryegrass, timothy, brome, fescue, Bermuda grass, orchard grass. Hay may also include legumes, such as alfalfa and clovers, legumes in hay are ideally cut pre-bloom. Other pasture forbs are also sometimes a part of the mix, straw is used mainly for animal bedding. Although straw is used as fodder, particularly as a source of dietary fiber. It is the leaf and seed material in the hay that determines its quality, farmers try to harvest hay at the point when the seed heads are not quite ripe and the leaf is at its maximum when the grass is mowed in the field. Hay is very sensitive to conditions, particularly when it is harvested. In drought conditions, both seed and leaf production are stunted, making hay that has a ratio of dry coarse stems that have very low nutritional values. If the weather is too wet, the cut hay may spoil in the field before it can be baled, the hay may also develop rot and mold after being baled, creating the potential for toxins to form in the feed, which could make the animals sick. It also has to be stored in a manner to prevent it from getting wet, mold and spoilage reduce nutritional value and may cause illness in animals. A symbiotic fungus in fescue may cause illness in horses and cattle, the successful harvest of maximum yields of high-quality hay is entirely dependent on the coincident occurrence of optimum crop, field, and weather conditions. When this occurs, there may be a period of activity on the hay farm while harvest proceeds until weather conditions become unfavourable. Hay or grass is the foundation of the diet for all grazing animals, Hay is usually fed to an animal in place of allowing the animal to graze on grasses in a pasture, particularly in the winter or during times when drought or other conditions make pasture unavailable. Animals that can eat hay vary in the types of grasses suitable for consumption, the ways they consume hay, most animals are fed hay in two daily feedings, morning and evening. However, this schedule is more for the convenience of humans, some animals, especially those being raised for meat, may be given enough hay that they simply are able to eat all day. The proper amount of hay and the type of hay required varies somewhat between different species, some animals are also fed concentrated feeds such as grain or vitamin supplements in addition to hay

17.
United Kingdom
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The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom or Britain, is a sovereign country in western Europe. Lying off the north-western coast of the European mainland, the United Kingdom includes the island of Great Britain, Northern Ireland is the only part of the United Kingdom that shares a land border with another sovereign state‍—‌the Republic of Ireland. The Irish Sea lies between Great Britain and Ireland, with an area of 242,500 square kilometres, the United Kingdom is the 78th-largest sovereign state in the world and the 11th-largest in Europe. It is also the 21st-most populous country, with an estimated 65.1 million inhabitants, together, this makes it the fourth-most densely populated country in the European Union. The United Kingdom is a monarchy with a parliamentary system of governance. The monarch is Queen Elizabeth II, who has reigned since 6 February 1952, other major urban areas in the United Kingdom include the regions of Birmingham, Leeds, Glasgow, Liverpool and Manchester. The United Kingdom consists of four countries—England, Scotland, Wales, the last three have devolved administrations, each with varying powers, based in their capitals, Edinburgh, Cardiff and Belfast, respectively. The relationships among the countries of the UK have changed over time, Wales was annexed by the Kingdom of England under the Laws in Wales Acts 1535 and 1542. A treaty between England and Scotland resulted in 1707 in a unified Kingdom of Great Britain, which merged in 1801 with the Kingdom of Ireland to form the United Kingdom of Great Britain and Ireland. Five-sixths of Ireland seceded from the UK in 1922, leaving the present formulation of the United Kingdom of Great Britain, there are fourteen British Overseas Territories. These are the remnants of the British Empire which, at its height in the 1920s, British influence can be observed in the language, culture and legal systems of many of its former colonies. The United Kingdom is a country and has the worlds fifth-largest economy by nominal GDP. The UK is considered to have an economy and is categorised as very high in the Human Development Index. It was the worlds first industrialised country and the worlds foremost power during the 19th, the UK remains a great power with considerable economic, cultural, military, scientific and political influence internationally. It is a nuclear weapons state and its military expenditure ranks fourth or fifth in the world. The UK has been a permanent member of the United Nations Security Council since its first session in 1946 and it has been a leading member state of the EU and its predecessor, the European Economic Community, since 1973. However, on 23 June 2016, a referendum on the UKs membership of the EU resulted in a decision to leave. The Acts of Union 1800 united the Kingdom of Great Britain, Scotland, Wales and Northern Ireland have devolved self-government

18.
Ireland
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Ireland is an island in the North Atlantic. It is separated from Great Britain to its east by the North Channel, the Irish Sea, Ireland is the second-largest island of the British Isles, the third-largest in Europe, and the twentieth-largest on Earth. Politically, Ireland is divided between the Republic of Ireland, which covers five-sixths of the island, and Northern Ireland, in 2011, the population of Ireland was about 6.4 million, ranking it the second-most populous island in Europe after Great Britain. Just under 4.6 million live in the Republic of Ireland, the islands geography comprises relatively low-lying mountains surrounding a central plain, with several navigable rivers extending inland. The island has lush vegetation, a product of its mild, thick woodlands covered the island until the Middle Ages. As of 2013, the amount of land that is wooded in Ireland is about 11% of the total, there are twenty-six extant mammal species native to Ireland. The Irish climate is moderate and classified as oceanic. As a result, winters are milder than expected for such a northerly area, however, summers are cooler than those in Continental Europe. Rainfall and cloud cover are abundant, the earliest evidence of human presence in Ireland is dated at 10,500 BC. Gaelic Ireland had emerged by the 1st century CE, the island was Christianised from the 5th century onward. Following the Norman invasion in the 12th century, England claimed sovereignty over Ireland, however, English rule did not extend over the whole island until the 16th–17th century Tudor conquest, which led to colonisation by settlers from Britain. In the 1690s, a system of Protestant English rule was designed to materially disadvantage the Catholic majority and Protestant dissenters, with the Acts of Union in 1801, Ireland became a part of the United Kingdom. Northern Ireland saw much civil unrest from the late 1960s until the 1990s and this subsided following a political agreement in 1998. In 1973 the Republic of Ireland joined the European Economic Community while the United Kingdom, Irish culture has had a significant influence on other cultures, especially in the fields of literature. Alongside mainstream Western culture, an indigenous culture exists, as expressed through Gaelic games, Irish music. The culture of the island shares many features with that of Great Britain, including the English language, and sports such as association football, rugby, horse racing. The name Ireland derives from Old Irish Eriu and this in turn derives from Proto-Celtic *Iveriu, which is also the source of Latin Hibernia. Iveriu derives from a root meaning fat, prosperous, during the last glacial period, and up until about 9000 years ago, most of Ireland was covered with ice, most of the time

19.
Mowing
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A mower is a person or machine that cuts grass or other plants that grow on the ground. Usually mowing is distinguished from reaping, which uses similar implements, a smaller mower used for lawns and sports grounds is called a lawn mower or grounds mower, which is often self-powered, or may also be small enough to be pushed by the operator. Grounds mowers have reel or rotary cutters, larger mowers or mower-conditioners are mainly used to cut grass for hay or silage and often place the cut material into rows, which are referred to as windrows. Swathers are also used to cut grass, prior to the invention and adoption of mechanized mowers, grass and grain crops were cut by hand using scythes or sickles. Larger mowers are usually ganged, so they can adapt individually to ground contours and they may be powered and drawn by a tractor or draft animals. The cutting units can be mounted underneath the tractor between the front and rear wheels, mounted on the back with a three-point hitch or pulled behind the tractor as a trailer. There are also dedicated self-propelled cutting machines, which often have the mower units mounted at the front and sides for easy visibility by the driver. Boom or side-arm mowers are mounted on long hydraulic arms, similar to a backhoe arm, in a channel on the bar there is a reciprocating sickle with very sharp sickle sections. The sickle bar is driven back and forth along the channel, the grass, or other plant matter, is cut between the sharp edges of the sickle sections and the finger-plates. The bar rides on the ground, supported on a skid at the inner end, a spring-loaded board at the outer end of the bar guides the cut hay away from the uncut hay. The so-formed channel, between cut and uncut material, allows the mower skid to ride in the channel and cut only uncut grass cleanly on the next swath and these were the first successful horse-drawn mowers on farms and the general principles still guide the design of modern mowers. Rotary mowers, also called drum mowers, have a rotating bar, or disks mounted on a bar. When these mowers are tractor-mounted they are capable of mowing grass at up to 20 miles per hour in good conditions. Some models are designed to be mounted in double and triple sets on a tractor, one in the front and one at each side, in rough cutting conditions, the blades attached to the disks are swivelled to absorb blows from obstructions. Mostly these are rear-mounted units and in some countries are called scrub cutters, self-powered mowers of this type are used for rougher grass in gardening and other land maintenance. The bar is held at a level just above the ground. The cut grass may be gathered in a collection bin and this type of mower is used to produce consistently short and even grass on bowling greens, lawns, parks and sports grounds. When pulled by a tractor, these mowers are often ganged into sets of three, five or more, to form a gang mower

20.
Hectare
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The hectare is an SI accepted metric system unit of area equal to 100 ares and primarily used in the measurement of land as a metric replacement for the imperial acre. An acre is about 0.405 hectare and one hectare contains about 2.47 acres, in 1795, when the metric system was introduced, the are was defined as 100 square metres and the hectare was thus 100 ares or 1⁄100 km2. When the metric system was further rationalised in 1960, resulting in the International System of Units, the are was not included as a recognised unit. The hectare, however, remains as a non-SI unit accepted for use with the SI units, the metric system of measurement was first given a legal basis in 1795 by the French Revolutionary government. At the first meeting of the CGPM in 1889 when a new standard metre, manufactured by Johnson Matthey & Co of London was adopted, in 1960, when the metric system was updated as the International System of Units, the are did not receive international recognition. The units that were catalogued replicated the recommendations of the CGPM, many farmers, especially older ones, still use the acre for everyday calculations, and convert to hectares only for official paperwork. Farm fields can have long histories which are resistant to change, with names such as the six acre field stretching back hundreds of years. The names centiare, deciare, decare and hectare are derived by adding the standard metric prefixes to the base unit of area. The centiare is a synonym for one square metre, the deciare is ten square metres. The are is a unit of area, equal to 100 square metres and it was defined by older forms of the metric system, but is now outside of the modern International System of Units. It is commonly used to measure real estate, in particular in Indonesia, India, and in French-, Portuguese-, Slovakian-, Serbian-, Czech-, Polish-, Dutch-, in Russia and other former Soviet Union states, the are is called sotka. It is used to describe the size of suburban dacha or allotment garden plots or small city parks where the hectare would be too large, the decare is derived from deka, the prefix for 10 and are, and is equal to 10 ares or 1000 square metres. It is used in Norway and in the former Ottoman areas of the Middle East, the hectare, although not strictly a unit of SI, is the only named unit of area that is accepted for use within the SI. The United Kingdom, United States, Burma, and to some extent Canada instead use the acre, others, such as South Africa, published conversion factors which were to be used particularly when preparing consolidation diagrams by compilation. In many countries, metrication redefined or clarified existing measures in terms of metric units, non-SI units accepted for use with the International System of Units

21.
Worcestershire
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Worcestershire is a county in the West Midlands of England. Between 1974 and 1998, it was merged with the county of Herefordshire as Hereford. The cathedral city of Worcester is the largest settlement and county town, other towns in the county include Redditch, Bromsgrove, Stourport-on-Severn, Droitwich, Evesham, Kidderminster, and Malvern. The north-east of Worcestershire includes part of the industrial West Midlands, the county is divided into six administrive districts, Worcester, Redditch, Wychavon, Malvern Hills, Wyre Forest, and Bromsgrove. The county borders Herefordshire, Shropshire, Staffordshire, West Midlands, Warwickshire, to the west, the county is bordered by the Malvern Hills and the spa town of Malvern. The south of the county is bordered by Gloucestershire and the edge of the Cotswolds. Two major rivers flow through the county, the Severn and the Avon, Worcestershire was the heartland of the early English kingdom of the Hwicce. It was absorbed by the Kingdom of Mercia during the 7th century and it was a separate ealdormanship briefly in the 10th century before forming part of the Earldom of Mercia in the 11th century. In the years leading up to the Norman conquest, the Church, supported by the cathedral, Evesham Abbey, Pershore Abbey, Malvern Priory, and other religious houses, increasingly dominated the county. The last known Anglo-Saxon sheriff of the county was Cyneweard of Laughern, on 4 August 1265, Simon de Montfort was killed in the Battle of Evesham in Worcestershire. In 1642, the Battle of Powick Bridge was the first major skirmish of the English Civil War, during the Middle Ages, much of the countys economy was based on the wool trade. Many areas of its forests, such as Feckenham Forest, Horewell Forest. Droitwich Spa, situated on large deposits of salt, was a centre of production from Roman times. These old industries have declined, to be replaced by other. The county is home to the worlds oldest continually published newspaper. Malvern was one of the centres of the 19th century rise in English spa towns due to Malvern water being believed to be very pure, containing nothing at all. The 2011 census found the population of Worcestershire to be 566,169, while this change is in line with the nationwide trend of White British peoples share of the population shrinking, Worcestershire is still much more ethnically homogeneous than the national average. In 2011 England as a whole was 79. 8% White British, the most notable were Dudley, Evenlode, and the area around Shipston-on-Stour

22.
Worcestershire Wildlife Trust
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Worcestershire Wildlife Trust is one of 47 wildlife trusts throughout the United Kingdom. It was founded in 1968 to conserve, protect and restore the countys wildlife, the Trust owns and manages over 70 nature reserves across the county, part of their vision for a Living Landscape for Worcestershire. The Trust has nearly 20,000 members and more than 350 volunteers, the Trust cares for over 70 nature reserves in Worcestershire totalling about 2000 acres. These include, Worcestershire Wildlife Trust is part of The Wildlife Trusts partnership, working towards a UK rich in wildlife, where everyone can appreciate, enjoy and help restore and protect wildlife for the future

23.
Pasture
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Pasture is land used for grazing. Pasture lands in the narrow sense are enclosed tracts of farmland, grazed by domesticated livestock, such as horses, cattle, the vegetation of tended pasture, forage, consists mainly of grasses, with an interspersion of legumes and other forbs. Pasture is typically grazed throughout the summer, in contrast to meadow which is ungrazed or used for grazing only after being mown to make hay for animal fodder. Pasture in a wider sense additionally includes rangelands, other unenclosed pastoral systems, soil type, minimum annual temperature, and rainfall are important factors in pasture management. Sheepwalk is an area of grassland where sheep can roam freely, the productivity of sheepwalk is measured by the number of sheep per area. This is dependent, among other things, on the underlying rock, sheepwalk is also the name of townlands in County Roscommon, Ireland and County Fermanagh, Northern Ireland. Unless factory farming, which entails in its most intensive form entirely trough-feeding, in more humid regions, pasture grazing is managed across a large global area for free range and organic farming. Grassland Heathland Machair Maquis Moorland Potrero Prairie Rangeland Rough pasture Savanna Steppe Wood pasture Veld Transhumance

24.
Heath
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A heath is a shrubland habitat found mainly on free-draining infertile, acidic soils and is characterised by open, low-growing woody vegetation. Moorland is generally related to high-ground heaths with—especially in Great Britain—a cooler, heaths are widespread worldwide, but are fast disappearing and considered a rare habitat in Europe. They form extensive and highly diverse communities across Australia in humid and sub-humid areas where fire regimes with recurring burning are required for the maintenance of the heathlands, even more diverse though less widespread heath communities occur in Southern Africa. Extensive heath communities can also be found in the California chaparral, New Caledonia, central Chile, in addition to these extensive heath areas, the vegetation type is also found in scattered locations across all continents, except Antarctica. Heaths are dominated by low shrubs,20 centimetres to 2 metres tall, heath vegetation can be extremely plant-species rich, and heathlands of Australia are home to some 3,700 endemic or typical species in addition to numerous less restricted species. The fynbos heathlands of South Africa are second only to tropical rainforests in plant biodiversity with over 7,000 species, in marked contrast, the tiny pockets of heathland in Europe are extremely depauperate with a flora consisting primarily of heather, heath and gorse. The bird fauna of heathlands are usually species of the region. In the depauperate heathlands of Europe bird species tend to be characteristic of the community and include Montagus harrier. Australian heathlands are also home to the worlds only nectar-feeding terrestrial mammal, the bird fauna of the South African fynbos includes sunbirds, warblers and siskins. Heathlands are also an excellent habitat for insects including ants, moths, butterflies and these heaths were originally created or expanded by centuries of human clearance of the natural forest and woodland vegetation, by grazing and burning. Referring to heathland in England, Rackham says, “Heaths are clearly the product of human activities and need to be managed as heathland, in recent years the conservation value of even these man-made heaths has become much more appreciated, and consequently most heathlands are protected. However they are threatened by tree incursion because of the discontinuation of traditional management techniques such as grazing and burning that mediated the landscapes. Some are also threatened by urban sprawl, anthropogenic heathlands are maintained artificially by a combination of grazing and periodic burning, or mowing, if not so maintained, they are rapidly re-colonised by forest or woodland. The re-colonising tree species will depend on what is available as the seed source. Bolster heath Chalk heath Garrigue Maquis shrubland Matorral Scrubland The Countryside Agency information on types of open land Origin of the word heath

25.
Moorland
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Moorland nowadays generally means uncultivated hill land, but includes low-lying wetlands. It is closely related to heath although experts disagree on precisely what distinguishes the types of vegetation, generally, moor refers to highland, high rainfall zones, whereas heath refers to lowland zones which are more likely to be the result of human activity. Most of the worlds moorlands are very diverse ecosystems, in the extensive moorlands of the tropics biodiversity can be extremely high. Moorland also bears a relationship to tundra, appearing as the tundra retreats, the boundary between tundra and moorland constantly shifts with climate change. Heathland and moorland are the most extensive areas of vegetation in the British Isles. The eastern British moorlands are similar to heaths but are differentiated by having a covering of peat, on western moors the peat layer may be several metres thick. There is uncertainty about how many moors were created by human activity, how much the deforestation was caused by climatic changes and how much by human activity is uncertain. A variety of habitat types are found in different world regions of moorland. The wildlife and vegetation forms often lead to high endemism because of the severe soil, for example, in Englands Exmoor is found the rare horse breed the Exmoor Pony, which has adapted to the harsh conditions of that environment. In Europe, the fauna consists of bird species such as red grouse, hen harrier, merlin, golden plover, curlew, skylark, meadow pipit, whinchat, ring ouzel. Other species dominate in moorlands elsewhere, reptiles are few due to the cooler conditions. In Europe, only the common viper is frequent, though in other regions moorlands are commonly home to dozens of reptile species, amphibians such as frogs are well represented in moorlands. When moorland is overgrazed, woody vegetation is often lost, being replaced by coarse, unpalatable grasses and bracken, some hill sheep breeds, such as Scottish Blackface and the Lonk, thrive on the austere conditions of heather moors. Burning of moorland has been practised for a number of reasons and this is recorded in Britain in the fourteenth century. Uncontrolled burning frequently caused problems, and was forbidden by statute in 1607, with the rise of sheep and grouse management in the nineteenth century it again became common practice. Heather is burnt at about 10 or 12 years old when it will regenerate easily, left longer, the woodier stems will burn more aggressively and will hinder regrowth. Burning of moorland vegetation needs to be carefully controlled as the peat itself can catch fire. In addition, uncontrolled burning of heather can promote alternative bracken, as a result, burning is now a controversial practice, Rackham calls it second-best land management

26.
Orchard
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An orchard is an intentional planting of trees or shrubs that is maintained for food production. Orchards comprise fruit- or nut-producing trees which are grown for commercial production. Orchards are also sometimes a feature of gardens, where they serve an aesthetic as well as a productive purpose. A fruit garden is generally synonymous with an orchard, although it is set on a smaller non-commercial scale, most temperate-zone orchards are laid out in a regular grid, with a grazed or mown grass or bare soil base that makes maintenance and fruit gathering easy. Orchards are sometimes concentrated near bodies of water, where climatic extremes are moderated, an orchards layout is the technique of planting the crops in a proper system. There are different methods of planting and thus different layouts, some of these layout types include, Square method Rectangular method Quincunx method Triangular method Hexagonal method Contour method For different varieties, these systems may vary to some extent. The most extensive orchards in the United States are apple and orange orchards, the most extensive apple orchard area is in eastern Washington state, with a lesser but significant apple orchard area in most of Upstate New York. Extensive orange orchards are found in Florida and southern California, where they are widely known as groves. In eastern North America, many orchards are along the shores of Lake Michigan, Lake Erie, in Canada, apple and other fruit orchards are widespread on the Niagara Peninsula, south of Lake Ontario. This region is known as Canada Fruitbelt and, in addition to large-scale commercial fruit marketing, murcia is a major orchard area in Europe, with citrus crops. New Zealand, China, Argentina and Chile also have extensive apple orchards, tenbury Wells in Worcestershire has been called The Town in the Orchard, since the 19th century, because it was surrounded by extensive orchards. Today, this heritage is celebrated through an annual Applefest, streuobstwiese is a German word that means a meadow with scattered fruit trees or fruit trees that are planted in a field. Streuobstwiese, or a meadow orchard, is a landscape in the temperate. In the 19th and early 20th centuries, Streuobstwiesen were a kind of a community orchard that were intended for productive cultivation of stone fruit. In recent years, ecologists have successfully lobbied for state subsidies to valuable habitats, biodiversity and natural landscapes, both conventional and meadow orchards provide a suitable habitat for many animal species that live in a cultured landscape. Orchard House in Concord, Massachusetts was the residence of American celebrated writer Louisa May Alcott, fruita, Utah part of Capitol Reef National Park has Mormon pioneer orchards maintained by the United States National Park Service. The Orchard Link organisation provides advice on how to manage and restore the county of Devons orchards, an organisation called Orchards Live carries out similar work in North Devon. Peoples Trust for Endangered Species has mapped every traditional orchard within England, the UK Biodiversity Partnership lists traditional orchards and a priority UK Biodiversity Action Plan habitat

27.
Honey
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Honey /ˈhʌni/ is a sugary food substance produced and stored by certain social hymenopteran insects. It is produced from the secretions of plants or insects, such as floral nectar or aphid honeydew, through regurgitation, enzymatic activity. The variety of honey produced by bees is the most well-known, due to its worldwide commercial production. Honey gets its sweetness from the monosaccharides fructose and glucose, and has about the relative sweetness as granulated sugar. It has attractive properties for baking and a distinctive flavor that leads some people to prefer it to sugar. Most microorganisms do not grow in honey, so sealed honey does not spoil, however, honey sometimes contains dormant endospores of the bacterium Clostridium botulinum, which can be dangerous to babies, as it may result in botulism. People who have an immune system should not eat honey because of the risk of bacterial or fungal infection. Although some evidence indicates honey may be effective in treating diseases and other conditions, such as wounds and burns. Providing 64 calories in a serving of one tablespoon equivalent to 1272 kj per 100 g. Honey is generally safe, but may have various, potential adverse effects or interactions with excessive consumption, existing disease conditions, or drugs. Honey use and production have a long and varied history as an ancient activity, depicted in Valencia, in cold weather or when other food sources are scarce, adult and larval bees use stored honey as food. By contriving for bee swarms to nest in man-made hives, people have been able to semidomesticate the insects, Bee digestive enzymes - invertase, amylase, and diastase - and gastric acid hydrolyze sucrose to a mixture of glucose and fructose. The bees work together as a group with the regurgitation and digestion for as long as 20 minutes until the product reaches storage quality. It is then placed in honeycomb cells left unsealed while still high in content and natural yeasts. The bees then cap the cells with wax to seal them, as removed from the hive by a beekeeper, honey has a long shelf life and will not ferment if properly sealed. Another source of honey is from a number of species, such as the wasps Brachygastra lecheguana and Brachygastra mellifica. These species are known to feed on nectar and produce honey, Honey is collected from wild bee colonies, or from domesticated beehives. The honey is stored in honeycombs, wild bee nests are sometimes located by following a honeyguide bird

28.
Arable land
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Arable land is, according to one definition, land capable of being ploughed and used to grow crops. In Britain, it was contrasted with pasturable lands such as heaths which could be used for sheep-rearing. A quite different kind of definition is used by various agencies concerned with agriculture, the abandoned land resulting from shifting cultivation is not included in this category. Data for ‘Arable land’ are not meant to indicate the amount of land that is potentially cultivable, a briefer definition appearing in the Eurostat glossary similarly refers to actual, rather than potential use, land worked regularly, generally under a system of crop rotation. According to Food and Agriculture Organization of the United Nations the worlds Arable land amounted to 1,407 M ha, out of a total 4,924 M ha land used for agriculture, as for year 2013. Agricultural land that is not arable according to the FAO definition above includes, Permanent crop - land that produces crops from woody vegetation, other non-arable land includes land unsuitable for any agricultural use. Although such limitations may preclude cultivation, and some will in some cases preclude any agricultural use, for example, US NRCS statistics indicate that about 59 percent of US non-federal pasture and unforested rangeland is unsuitable for cultivation, yet such land has value for grazing of livestock. Similar examples can be found in many rangeland areas elsewhere, land incapable of being cultivated for production of crops can sometimes be converted to arable land. New arable land makes more food, and can reduce starvation and this outcome also makes a country more self-sufficient and politically independent, because food importation is reduced. This process is extremely expensive. An alternative is the Seawater Greenhouse which desalinates water through evaporation and condensation using solar energy as the energy input. This technology is optimized to grow crops on land close to the sea. The people covered the islands with a layer of seaweed. Israel, The construction of desalination plants along Israels coast allowed agriculture in areas that were formerly desert. The desalination plants, which remove the salt from water, have created a new source of water for farming, drinking. Slash and burn agriculture uses nutrients in wood ash, but these expire within a few years, terra preta, fertile tropical soils created by adding charcoal. Some examples of fertile land being turned into infertile land are. Rainforest deforestation, The fertile tropical forests are converted into infertile desert land, for example, Madagascars central highland plateau has become virtually totally barren, as a result of slash-and-burn deforestation, an element of shifting cultivation practiced by many natives

29.
Shrubland
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Shrubland, scrubland, scrub or brush is a plant community characterised by vegetation dominated by shrubs, often also including grasses, herbs, and geophytes. Shrubland may either occur naturally or be the result of human activity and it may be the mature vegetation type in a particular region and remain stable over time, or a transitional community that occurs temporarily as the result of a disturbance, such as fire. A stable state may be maintained by natural disturbance such as fire or browsing. Shrubland may be unsuitable for habitation because of the danger of fire. The term shrubland was coined in 1903, shrubland species generally show a wide range of adaptations to fire, such as heavy seed production, lignotubers, and fire-induced germination. In botany and ecology a shrub is defined as a woody plant less than 8 m high. Tall shrubs are mostly 2–8 m high, small shrubs 1–2 m high, Mediterranean scrublands Mediterranean scrublands occur naturally in the Mediterranean forests, woodlands, and scrub biomes, located in the five Mediterranean climate regions of the world. Scrublands are most common near the seacoast, and have adapted to the wind. Low, soft-leaved scrublands around the Mediterranean Basin are known as garrigue in France, phrygana in Greece, tomillares in Spain, and batha in Israel. Interior scrublands Interior scrublands occur naturally in areas where soils are nutrient-poor. Florida scrub is another example of interior scrublands, dwarf shrubs Some vegetation types are formed of dwarf-shrubs, low-growing or creeping shrubs. These include the maquis and garrigues of Mediterranean climates, and the acid-loving dwarf shrubs of heathland and moorland, fynbos Maquis Prostrate shrub Semi-desert Shrub-steppe Shrub swamp Moorland

30.
North America
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North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere. It can also be considered a subcontinent of the Americas. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the west and south by the Pacific Ocean, and to the southeast by South America and the Caribbean Sea. North America covers an area of about 24,709,000 square kilometers, about 16. 5% of the land area. North America is the third largest continent by area, following Asia and Africa, and the fourth by population after Asia, Africa, and Europe. In 2013, its population was estimated at nearly 565 million people in 23 independent states, or about 7. 5% of the worlds population, North America was reached by its first human populations during the last glacial period, via crossing the Bering land bridge. The so-called Paleo-Indian period is taken to have lasted until about 10,000 years ago, the Classic stage spans roughly the 6th to 13th centuries. The Pre-Columbian era ended with the migrations and the arrival of European settlers during the Age of Discovery. Present-day cultural and ethnic patterns reflect different kind of interactions between European colonists, indigenous peoples, African slaves and their descendants, European influences are strongest in the northern parts of the continent while indigenous and African influences are relatively stronger in the south. Because of the history of colonialism, most North Americans speak English, Spanish or French, the Americas are usually accepted as having been named after the Italian explorer Amerigo Vespucci by the German cartographers Martin Waldseemüller and Matthias Ringmann. Vespucci, who explored South America between 1497 and 1502, was the first European to suggest that the Americas were not the East Indies, but a different landmass previously unknown by Europeans. In 1507, Waldseemüller produced a map, in which he placed the word America on the continent of South America. He explained the rationale for the name in the accompanying book Cosmographiae Introductio, for Waldseemüller, no one should object to the naming of the land after its discoverer. He used the Latinized version of Vespuccis name, but in its feminine form America, following the examples of Europa, Asia and Africa. Later, other mapmakers extended the name America to the continent, In 1538. Some argue that the convention is to use the surname for naming discoveries except in the case of royalty, a minutely explored belief that has been advanced is that America was named for a Spanish sailor bearing the ancient Visigothic name of Amairick. Another is that the name is rooted in a Native American language, the term North America maintains various definitions in accordance with location and context. In Canadian English, North America may be used to refer to the United States, alternatively, usage sometimes includes Greenland and Mexico, as well as offshore islands

31.
Europe
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Europe is a continent that comprises the westernmost part of Eurasia. Europe is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, yet the non-oceanic borders of Europe—a concept dating back to classical antiquity—are arbitrary. Europe covers about 10,180,000 square kilometres, or 2% of the Earths surface, politically, Europe is divided into about fifty sovereign states of which the Russian Federation is the largest and most populous, spanning 39% of the continent and comprising 15% of its population. Europe had a population of about 740 million as of 2015. Further from the sea, seasonal differences are more noticeable than close to the coast, Europe, in particular ancient Greece, was the birthplace of Western civilization. The fall of the Western Roman Empire, during the period, marked the end of ancient history. Renaissance humanism, exploration, art, and science led to the modern era, from the Age of Discovery onwards, Europe played a predominant role in global affairs. Between the 16th and 20th centuries, European powers controlled at times the Americas, most of Africa, Oceania. The Industrial Revolution, which began in Great Britain at the end of the 18th century, gave rise to economic, cultural, and social change in Western Europe. During the Cold War, Europe was divided along the Iron Curtain between NATO in the west and the Warsaw Pact in the east, until the revolutions of 1989 and fall of the Berlin Wall. In 1955, the Council of Europe was formed following a speech by Sir Winston Churchill and it includes all states except for Belarus, Kazakhstan and Vatican City. Further European integration by some states led to the formation of the European Union, the EU originated in Western Europe but has been expanding eastward since the fall of the Soviet Union in 1991. The European Anthem is Ode to Joy and states celebrate peace, in classical Greek mythology, Europa is the name of either a Phoenician princess or of a queen of Crete. The name contains the elements εὐρύς, wide, broad and ὤψ eye, broad has been an epithet of Earth herself in the reconstructed Proto-Indo-European religion and the poetry devoted to it. For the second part also the divine attributes of grey-eyed Athena or ox-eyed Hera. The same naming motive according to cartographic convention appears in Greek Ανατολή, Martin Litchfield West stated that phonologically, the match between Europas name and any form of the Semitic word is very poor. Next to these there is also a Proto-Indo-European root *h1regʷos, meaning darkness. Most major world languages use words derived from Eurṓpē or Europa to refer to the continent, in some Turkic languages the originally Persian name Frangistan is used casually in referring to much of Europe, besides official names such as Avrupa or Evropa

32.
Colonization
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Colonization is a process by which a central system of power dominates the surrounding land and its components. The term is derived from the Latin word colere, which means to inhabit, Colonization was linked to the spread of tens of millions from Western European states all over the world. In many settled colonies, Western European settlers formed a majority of the population. Examples include the Americas, Australia and New Zealand and these colonies were occasionally called neo-Europes. In other places, Western European settlers formed minority groups, who were dominant in their places of settlement. When Britain started to settle Australia, New Zealand and various smaller islands. Terra nullius meaning empty land in Latin, due to the absence of European farming techniques, the land was deemed unaltered by man and therefore treated as uninhabited, despite the presence of indigenous populations. In the 19th century, laws and ideas such as Mexicos General Colonization Law, in ancient times, maritime nations such as the city-states of Greece and Phoenicia often established colonies to farm what they believed was uninhabited land. Land suitable for farming was often occupied by migratory barbarian tribes who lived by hunting and gathering, to ancient Greeks and Phoenicians, these lands were regarded as simply vacant. However, this did not mean that conflict did not exist between the colonizers and local/native peoples, Greeks and Phoenicians also established colonies with the intent of regulating and expanding trade throughout the Mediterranean and Middle East. Another period of colonization in ancient times was during the Roman Empire, the Roman Empire conquered large parts of Western Europe, North Africa and West Asia. In North Africa and West Asia, the Romans often conquered what they regarded as civilized peoples, as they moved north into Europe, they mostly encountered rural peoples/tribes with very little in the way of cities. In these areas, waves of Roman colonization often followed the conquest of the areas, the decline and collapse of the Roman Empire saw the large-scale movement of people in Eastern Europe and Asia. During this period there were the movements of peoples establishing new colonies all over western Europe. The events of time saw the development of many of the modern day nations of Europe like the Franks in France and Germany. In West Asia, during Sassanid Empire, some Persians established colonies in Yemen, the Vikings of Scandinavia also carried out a large-scale colonization. The Vikings are best known as raiders, setting out from their homelands in Denmark, southern Norway and southern Sweden. In time, the Vikings began trading, and established colonies, the Vikings discovered Iceland and established colonies before moving onto Greenland, where they briefly held some colonies

33.
Algonquian peoples
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The Algonquian are one of the most populous and widespread North American native language groups. Today, thousands of individuals identify with various Algonquian peoples, historically, the peoples were prominent along the Atlantic Coast and into the interior along the St. Lawrence River and around the Great Lakes. This grouping consists of the peoples who speak Algonquian languages, before Europeans came into contact, most Algonquian settlements lived by hunting and fishing, although quite a few supplemented their diet by cultivating corn, beans and squash. The Algonquians of New England practiced a seasonal economy, the basic social unit was the village, a few hundred people related by a clan kinship structure. The people moved to locations of greatest natural food supply, often breaking into smaller units or recombining as the circumstances required and this custom resulted in a certain degree of cross-tribal mobility, especially in troubled times. In warm weather, they constructed light wigwams for portability, wigwams are a type of hut which usually had buckskin doors. In the winter, they erected the more substantial long houses and they cached food supplies in more permanent, semi-subterranean structures. In the spring, when the fish were spawning, they left the camps to build villages at coastal locations. In March, they caught smelt in nets and weirs, moving about in birchbark canoes, in April, they netted alewife, sturgeon and salmon. In May, they caught cod with hook and line in the ocean, putting out to sea, the men hunted whales, porpoises, walruses and seals. The women and children gathered scallops, mussels, clams and crabs, from April through October, natives hunted migratory birds and their eggs, Canada geese, brant, mourning doves and others. In July and August they gathered strawberries, raspberries, blueberries, in September, they split into small groups and moved up the streams to the forest. There, the men hunted beaver, caribou, moose and white-tailed deer, in December, when the snows began, the people created larger winter camps in sheltered locations, where they built or reconstructed long houses. February and March were lean times, the tribes in southern New England and other northern latitudes had to rely on cached food. Northerners developed a practice of going hungry for days at a time. Historians hypothesize that this kept the population down, according to Liebigs law. The northerners were food gatherers only, the southern Algonquians of New England relied predominantly on slash-and-burn agriculture. They cleared fields by burning for one or two years of cultivation, after which the moved to another location

34.
Iroquois
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The Iroquois or Haudenosaunee are a historically powerful northeast Native American confederacy. The Iroquois have absorbed many other peoples into their cultures as a result of warfare, adoption of captives, the historic Erie, Susquehannock, Wyandot, and St. Lawrence Iroquoians, all independent peoples, spoke Iroquoian languages. In 2010, more than 45,000 enrolled Six Nations people lived in Canada, the most common name for the confederacy, Iroquois, is of somewhat obscure origin. The first time it appears in writing is in the account of Samuel de Champlain of his journey to Tadoussac in 1603, other spellings occurring in the earliest sources include Erocoise, Hiroquois, Hyroquoise, Irecoies, Iriquois, Iroquaes, Irroquois, and Yroquois. In the French spoken at the time, this would have been pronounced as or. In 1883, Horatio Hale wrote that the Charlevoix etymology was dubious, Hale suggested instead that the term came from Huron, and was cognate with Mohawk ierokwa they who smoke or Cayuga iakwai a bear. Hewitt responded to Hales etymology in 1888 by expressing doubt that either of those words even exist in the respective languages, a more modern etymology is that advocated by Gordon M. Day in 1968, who elaborates upon an earlier etymology given by Charles Arnaud in 1880. Arnaud had claimed that the word came from Montagnais irnokué, meaning terrible man, Day proposes a hypothetical Montagnais phrase irno kwédač, meaning a man, an Iroquois, as the origin of this term. More recently, Peter Bakker has proposed a Basque origin for Iroquois. g and he proposes instead that the word derives from hilokoa, from the Basque roots hil to kill, ko, and a. He also argues that the /l/ was rendered as /r/ since the former is not attested in the inventory of any language in the region. Thus the word according to Bakker is translatable as the killer people, a different term, Haudenosaunee, is the designation more commonly used by the Iroquois to refer to themselves. It is also preferred by scholars of Native American history who consider the name Iroquois to be derogatory in origin. An alternate designation, Ganonsyoni, is encountered as well. More transparently, the Iroquois confederacy is also referred to simply as the Six Nations. The history of the Iroquois Confederacy goes back to its formation by the Peacemaker in 1142, each nation within the Iroquoian family had a distinct language, territory and function in the League. Iroquois influence extended into present-day Canada, westward along the Great Lakes, the League is governed by a Grand Council, an assembly of fifty chiefs or sachems, each representing one of the clans of one of the nations. The original Iroquois League or Five Nations, occupied areas of present-day New York State up to the St. Lawrence River, west of the Hudson River. The League was composed of the Mohawk, Oneida, Onondaga, Cayuga, in or close to 1722, the Tuscarora tribe joined the League, having migrated from the Carolinas after being displaced by Anglo-European settlement

35.
Native Americans in the United States
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In the United States, Native Americans are people descended from the Pre-Columbian indigenous population of the land within the countrys modern boundaries. These peoples were composed of distinct tribes, bands, and ethnic groups. Most Native American groups had historically preserved their histories by oral traditions and artwork, at the time of first contact, the indigenous cultures were quite different from those of the proto-industrial and mostly Christian immigrants. Some of the Northeastern and Southwestern cultures in particular were matrilineal, the majority of Indigenous American tribes maintained their hunting grounds and agricultural lands for use of the entire tribe. Europeans at that time had patriarchal cultures and had developed concepts of property rights with respect to land that were extremely different. Assimilation became a consistent policy through American administrations, during the 19th century, the ideology of manifest destiny became integral to the American nationalist movement. Expansion of European-American populations to the west after the American Revolution resulted in increasing pressure on Native American lands and this resulted in the ethnic cleansing of many tribes, with the brutal, forced marches coming to be known as The Trail of Tears. As American expansion reached into the West, settler and miner migrants came into increasing conflict with the Great Basin, Great Plains and these were complex nomadic cultures based on horse culture and seasonal bison hunting. Over time, the United States forced a series of treaties and land cessions by the tribes, in 1924, Native Americans who were not already U. S. citizens were granted citizenship by Congress. Contemporary Native Americans have a relationship with the United States because they may be members of nations, tribes. The terms used to refer to Native Americans have at times been controversial, by comparison, the indigenous peoples of Canada are generally known as First Nations. It is not definitively known how or when the Native Americans first settled the Americas and these early inhabitants, called Paleoamericans, soon diversified into many hundreds of culturally distinct nations and tribes. The archaeological periods used are the classifications of archaeological periods and cultures established in Gordon Willey and Philip Phillips 1958 book Method and they divided the archaeological record in the Americas into five phases, see Archaeology of the Americas. The Clovis culture, a hunting culture, is primarily identified by use of fluted spear points. Artifacts from this culture were first excavated in 1932 near Clovis, the Clovis culture ranged over much of North America and also appeared in South America. The culture is identified by the distinctive Clovis point, a flaked flint spear-point with a notched flute, dating of Clovis materials has been by association with animal bones and by the use of carbon dating methods. Recent reexaminations of Clovis materials using improved carbon-dating methods produced results of 11,050 and 10,800 radiocarbon years B. P, other tribes have stories that recount migrations across long tracts of land and a great river, believed to be the Mississippi River. Genetic and linguistic data connect the people of this continent with ancient northeast Asians

36.
Deer
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Deer are the ruminant mammals forming the family Cervidae. The two main groups are the Cervinae, including the muntjac, the deer and the chital, and the Capreolinae, including the elk, reindeer, the Western roe deer. Female reindeer, and male deer of all species, grow, in this they differ from permanently horned antelope, which are in the same order, Artiodactyla. The musk deer of Asia and water chevrotain of tropical African and Asian forests are not usually regarded as true deer and form their own families, Moschidae and Tragulidae, respectively. Deer appear in art from Palaeolithic cave paintings onwards, and they have played a role in mythology, religion and their economic importance includes the use of their meat as venison, their skins as soft, strong buckskin, and their antlers as handles for knives. Deer hunting has been a sport since at least the Middle Ages. Deer live in a variety of biomes, ranging from tundra to the tropical rainforest, while often associated with forests, many deer are ecotone species that live in transitional areas between forests and thickets and prairie and savanna. The majority of deer species inhabit temperate mixed deciduous forest, mountain mixed coniferous forest, tropical seasonal/dry forest. Clearing open areas within forests to some extent may actually benefit deer populations by exposing the understory and allowing the types of grasses, weeds, additionally, access to adjacent croplands may also benefit deer. However, adequate forest or brush cover must still be provided for populations to grow, however, fallow deer have been introduced to South Africa. There are also species of deer that are highly specialized, and live almost exclusively in mountains, grasslands, swamps. Some deer have a distribution in both North America and Eurasia. Examples include the caribou that live in Arctic tundra and taiga and moose that inhabit taiga, huemul deer of South Americas Andes fill the ecological niches of the ibex and wild goat, with the fawns behaving more like goat kids. Mountain slope habitats vary from moist coniferous/mixed forested habitats to dry forests with alpine meadows higher up. The foothills and river valleys between the mountain provide a mosaic of cropland and deciduous parklands. The rare woodland caribou have the most restricted range living at altitudes in the subalpine meadows. Elk and mule deer both migrate between the alpine meadows and lower coniferous forests and tend to be most common in this region, elk also inhabit river valley bottomlands, which they share with White-tailed deer. They also live in the aspen parklands north of Calgary and Edmonton, the adjacent Great Plains grassland habitats are left to herds of elk, American bison, and pronghorn antelope

37.
Deer hunting
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Deer hunting is survival hunting or sport hunting for deer, which dates back tens of thousands of years. There are many types of deer around the world that are hunted, New Zealand has had 10 species of deer introduced. From the 1850s, red deer were liberated, followed by fallow, sambar, wapiti, sika, rusa, the introduced herds of axis and moose failed to grow, and have become extinct. In the absence of predators to control populations, deer were thought to be a pest due to their effect on native vegetation, from the 1950s the government employed professional hunters to cull the deer population. Deer hunting is now an activity, organised and advocated for at the national level by the New Zealand Deerstalkers Association. The deer most sought after in North America, east of the Rocky Mountains, is the white-tailed deer, west of the Rockies, the mule deer is the dominant deer species. Blacktail deer are dominant along the west coast from Northern California to Southeast Alaska, with introduced populations in Prince William Sound, the most notable differences between these deer, other than distribution, are the differences in ears, tail, antler shape, and body size. The mule deers ears are longer than the ears of a white-tailed deer, they also have different color skin and brighter faces. Mule deer have a tail which is proportionally smaller than that of the white-tailed deer. White-tailed bucks are slightly smaller than mule deer bucks, both of the species lose their antlers in January, and regrow the antlers during the following summer beginning in June. Velvet from the antlers are shed in August and September, each buck normally gets larger each year as long as good food sources are present. Antler growth depends on food sources, if food is not good one year, antlers will be smaller. Many deer do not reach their potential due to getting hit by automobiles. In Hawaii, axis deer were introduced into the environment in the 1950s, having no predators their numbers quickly grew and they are considered an invasive species especially on the islands of Lanai and Maui. Recently there have been sightings of deer on the big island of Hawaii. Most of the hunting on Maui is on privately held lands. Moose and elk are also popular game animals that are species of deer. However, hunting them is not usually referred to as deer hunting and they are considerably larger than mule deer or white-tailed deer, and hunting techniques are rather different

38.
Alpine tundra
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Alpine tundra is a type of natural region or biome that does not contain trees because it is at high altitude. The high altitude causes an adverse climate, which is too cold, Alpine tundra transitions to sub-alpine forests below the tree line, stunted forests occurring at the forest-tundra ecotone are known as Krummholz. With increasing elevation it ends at the line where snow. Alpine tundra occurs in mountains worldwide, the flora of the alpine tundra is characterized by dwarf shrubs close to the ground. The cold climate of the tundra is caused by the lack of greenhouse effect at high altitude. Alpine tundra occurs at high altitude at any latitude. Portions of Montane grasslands and shrublands ecoregions worldwide include alpine tundra, Alpine tundra occupies high-mountain summits, slopes, and ridges above timberline. Aspect plays a role as well, the treeline often occurs at higher elevations on warmer equator-facing slopes, with limited access to infrastructure, only a handful of human communities exist in alpine zones. Many are small and have heavily specialized economies, often relying on such as agriculture, mining. An example of such a town is La Rinconada, Peru, a gold-mining town. A counterexample is El Alto, Bolivia, at 4,150 metres, which has a diverse service and manufacturing economy. Alpine climate is the weather for the alpine tundra. The climate becomes colder at high elevations—this characteristic is described by the rate of air, air tends to get colder as it rises. The dry adiabatic lapse rate is 10 °C per km of elevation or altitude, therefore, moving up 100 metres on a mountain is roughly equivalent to moving 80 kilometers towards the pole. This relationship is only approximate, however, since local factors such as proximity to oceans can drastically modify the climate, typical high-elevation growing seasons range from 45 to 90 days, with average summer temperatures near 10 °C. Growing season temperatures frequently fall below freezing, and frost occurs throughout the season in many areas. Precipitation occurs mainly as snow, but soil water availability is highly variable with season, location. For example, snowfields commonly accumulate on the lee sides of ridges while ridgelines may remain nearly snow free due to redistribution by wind, some alpine habitats may be up to 70% snow free in winter

39.
Tree line
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The tree line is the edge of the habitat at which trees are capable of growing. It is found at high elevations and in frigid environments, beyond the tree line, trees cannot tolerate the environmental conditions. The tree line should not be confused with a lower timberline or forest line, at the tree line, tree growth is often sparse and stunted, with the last trees forming densely matted bushes, known as krummholz. The tree line, like other natural lines, appears well-defined from a distance. Trees grow shorter towards the inhospitable climate until they stop growing. The climate above the line of mountains is called an alpine climate. In the northern hemisphere treelines on north-facing slopes are lower than on south-facing slopes because the increased shade on north-facing slopes means the snowpack takes longer to melt and this shortens the growing season for trees. In the southern hemisphere, the slopes have the shorter growing season. The alpine tree line boundary is seldom abrupt, it forms a transition zone between closed forest below and treeless alpine tundra above. Environmentally dwarfed shrubs commonly forms the upper limit, the decrease in air temperature due to increasing elevation causes the alpine climate. Skin effects and topography can create microclimates that alter the general cooling trend, however, the number of degree days calculated from leaf temperatures may be very similar in the two kinds of timberlines. A series of warm summers in the 1940s seems to have permitted the establishment of “significant numbers” of spruce seedlings above the treeline in the hills near Fairbanks. Survival depends on a sufficiency of new growth to support the tree, the windiness of high-elevation sites is also a potent determinant of the distribution of tree growth. However, snow accumulation in sheltered gullies in the Selkirk Mountains of southeastern British Columbia causes timberline to be 400 metres lower than on exposed intervening shoulders. In a desert, the line marks the driest places where trees can grow. These tend to be called the tree line and occur below about 5,000 ft elevation in the Desert Southwestern United States. In some mountainous areas, higher elevations above the line or on equator-facing and leeward slopes can result in low rainfall. This dries out the soil, resulting in an arid environment unsuitable for trees

40.
Coastal meadow
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Coastal meadows are meadows in the coastal zone, influenced by the sea. Under this definition, the salinity of the air and wind is usually high, some coastal meadows may be flooded by seawater occasionally, increasing the demands on the flora even further. These conditions however, does not make a meadow, to be categorized as a meadow in the first place, the plantgrowth has to be low in height, and normally this can only be achieved from wear by general traffic or grazing of the landscape. Coastal meadows are usually thought of as cultural landscapes or biotopes, requiring some degree of intervention. If left alone, coastal meadows would often transform into a transitional meadow, depending on the geology, climate and local conditions, coastal meadows can take on different expressions, with their own specific ecology. The main subcategories are, Beach meadows Fell meadows Coastal meadows can be all over the world. Salt marsh Coastal prairie Coastal meadow management

41.
Seawater
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Seawater, or salt water, is water from a sea or ocean. On average, seawater in the oceans has a salinity of about 3. 5% This means that every kilogram of seawater has approximately 35 grams of dissolved salts. Average density at the surface is 1.025 kg/l, seawater is denser than both fresh water and pure water because the dissolved salts increase the mass by a larger proportion than the volume. The freezing point of seawater decreases as salt concentration increases, at typical salinity, it freezes at about −2 °C. The coldest seawater ever recorded was in 2010, in a stream under an Antarctic glacier, seawater pH is typically limited to a range between 7.5 and 8.4. However, there is no universally accepted reference pH-scale for seawater, although the vast majority of seawater has a salinity of between 31 g/kg and 38 g/kg, seawater is not uniformly saline throughout the world. Where mixing occurs with fresh water runoff from river mouths, near melting glaciers or vast amounts precipitation, the most saline open sea is the Red Sea, where high rates of evaporation, low precipitation and low river run-off, and confined circulation result in unusually salty water. The salinity in isolated bodies of water can be considerably greater still, historically, several salinity scales were used to approximate the absolute salinity of seawater. A popular scale was the Practical Salinity Scale where salinity was measured in practical salinity units, the current standard for salinity is the Reference Salinity scale with the salinity expressed in units of g/kg. The density of surface seawater ranges from about 1020 to 1029 kg/m3, depending on the temperature, at a temperature of 25 °C, salinity of 35 g/kg and 1 atm pressure, the density of seawater is 1023.6 kg/m3. Deep in the ocean, under pressure, seawater can reach a density of 1050 kg/m3 or higher. The density of seawater also changes with salinity, brines generated by seawater desalination plants can have salinities up to 120 g/kg. The density of typical seawater brine of 120 g/kg salinity at 25 °C, seawater pH is limited to the range 7.5 to 8.4. The speed of sound in seawater is about 1,500 m/s, and varies with temperature, salinity. The thermal conductivity of seawater is 0.6 W/mK at 25 °C, the thermal conductivity decreases with increasing salinity and increases with increasing temperature. Seawater contains more dissolved ions than all types of freshwater, however, the ratios of solutes differ dramatically. Bicarbonate ions also constitute 48% of river water solutes but only 0. 14% of all seawater ions, differences like these are due to the varying residence times of seawater solutes, sodium and chlorine have very long residence times, while calcium tends to precipitate much more quickly. The most abundant dissolved ions in seawater are sodium, chloride, magnesium, sulfate and its osmolarity is about 1000 mOsm/l

42.
Desert
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A desert is a barren area of land where little precipitation occurs and consequently living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to the processes of denudation, about one third of the land surface of the world is arid or semi-arid. This includes much of the regions where little precipitation occurs. Deserts can be classified by the amount of precipitation falls, by the temperature that prevails. Deserts are formed by weathering processes as large variations in temperature between day and night put strains on the rocks which consequently break in pieces, although rain seldom occurs in deserts, there are occasional downpours that can result in flash floods. Rain falling on hot rocks can cause them to shatter and the resulting fragments and this picks up particles of sand and dust and wafts them aloft in sand or dust storms. Wind-blown sand grains striking any solid object in their path can abrade the surface, rocks are smoothed down, and the wind sorts sand into uniform deposits. The grains end up as level sheets of sand or are piled high in billowing sand dunes, other deserts are flat, stony plains where all the fine material has been blown away and the surface consists of a mosaic of smooth stones. These areas are known as desert pavements and little further erosion takes place, other desert features include rock outcrops, exposed bedrock and clays once deposited by flowing water. Temporary lakes may form and salt pans may be left when waters evaporate, there may be underground sources of water in the form of springs and seepages from aquifers. Where these are found, oases can occur, plants and animals living in the desert need special adaptations to survive in the harsh environment. Plants tend to be tough and wiry with small or no leaves, water-resistant cuticles, some annual plants germinate, bloom and die in the course of a few weeks after rainfall while other long-lived plants survive for years and have deep root systems able to tap underground moisture. Animals need to cool and find enough food and water to survive. Many are nocturnal and stay in the shade or underground during the heat of the day and they tend to be efficient at conserving water, extracting most of their needs from their food and concentrating their urine. Some animals remain in a state of dormancy for long periods and they then reproduce rapidly while conditions are favorable before returning to dormancy. People have struggled to live in deserts and the surrounding lands for millennia. Nomads have moved their flocks and herds to wherever grazing is available, the cultivation of semi-arid regions encourages erosion of soil and is one of the causes of increased desertification. Many trade routes have been forged across deserts, especially across the Sahara Desert, large numbers of slaves were also taken northwards across the Sahara

43.
Precipitation
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In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravity. The main forms of precipitation include drizzle, rain, sleet, snow, graupel, Precipitation occurs when a portion of the atmosphere becomes saturated with water vapor, so that the water condenses and precipitates. Thus, fog and mist are not precipitation but suspensions, because the vapor does not condense sufficiently to precipitate. Two processes, possibly acting together, can lead to air becoming saturated, Precipitation forms as smaller droplets coalesce via collision with other rain drops or ice crystals within a cloud. Short, intense periods of rain in scattered locations are called showers, moisture that is lifted or otherwise forced to rise over a layer of sub-freezing air at the surface may be condensed into clouds and rain. This process is active when freezing rain is occurring. A stationary front is often present near the area of freezing rain, provided necessary and sufficient atmospheric moisture content, the moisture within the rising air will condense into clouds, namely stratus and cumulonimbus. Eventually, the droplets will grow large enough to form raindrops. Lake-effect snowfall can be locally heavy, thundersnow is possible within a cyclones comma head and within lake effect precipitation bands. In mountainous areas, heavy precipitation is possible where upslope flow is maximized within windward sides of the terrain at elevation, on the leeward side of mountains, desert climates can exist due to the dry air caused by compressional heating. The movement of the trough, or intertropical convergence zone. Precipitation is a component of the water cycle, and is responsible for depositing the fresh water on the planet. Approximately 505,000 cubic kilometres of water falls as precipitation each year,398,000 cubic kilometres of it over the oceans and 107,000 cubic kilometres over land. Given the Earths surface area, that means the globally averaged annual precipitation is 990 millimetres, Climate classification systems such as the Köppen climate classification system use average annual rainfall to help differentiate between differing climate regimes. Precipitation may occur on celestial bodies, e. g. when it gets cold, Mars has precipitation which most likely takes the form of frost. Precipitation is a component of the water cycle, and is responsible for depositing most of the fresh water on the planet. Approximately 505,000 km3 of water falls as precipitation each year,398,000 km3 of it over the oceans, given the Earths surface area, that means the globally averaged annual precipitation is 990 millimetres. Mechanisms of producing precipitation include convective, stratiform, and orographic rainfall, Precipitation can be divided into three categories, based on whether it falls as liquid water, liquid water that freezes on contact with the surface, or ice

44.
Humus
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In soil science, humus refers to the fraction of soil organic matter that is amorphous and without the cellular cake structure characteristic of plants, micro-organisms or animals. Humus significantly influences the bulk density of soil and contributes to moisture, soil formation begins with the weathering of humus. In agriculture, humus is sometimes used to describe mature. It is also used to describe a topsoil horizon that contains organic matter, humus is the dark organic matter that forms in the soil when plant and animal matter decays. Humus contains many nutrients for healthy soil, nitrogen being the most important of all. A great part of the material that reaches the soil is broken down by the action of microorganisms. In this way the nitrogen and the nutrients are recycled. These organic polymers are stable, that is resistant to the action of microorganisms and this stability implies that once formed humus integrates the permanent structure of soil, contributing to its improvement. It is difficult to define precisely, it is a highly complex substance. Humus should be differentiated from decomposing organic matter, the latter is rough-looking material and remains of the original plant are still visible. Fully humified organic matter, on the hand, has a uniform dark, spongy, jelly-like appearance. It may remain like this for millennia or more and it has no determinate shape, structure or character. However, humified organic matter, when examined under the microscope may reveal tiny plant, animal or microbial remains that have been mechanically and this suggests a fuzzy boundary between humus and organic matter. In most literature, humus is considered a part of soil organic matter. The process of humification can occur naturally in soil, or in the production of compost, organic matter is degraded into humus by a combination of mycorrhizal fungi, bacteria, microbes and animals such as earthworms, nematodes, protozoa and various arthropods. It helps the soil retain moisture by increasing microporosity, and encourages the formation of soil structure. Humus allows soil organisms to feed and reproduce, and is described as the life-force of the soil. Plant remains contain organic compounds, sugars, starches, proteins, carbohydrates, lignins, waxes, resins, simple proteins, organic acids, starches and sugars break down rapidly, while crude proteins, fats, waxes and resins remain relatively unchanged for longer periods of time

45.
Prairie
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Temperate grassland regions include the Pampas of Argentina, southern Brazil and Uruguay as well as the steppes of Eurasia. Lands typically referred to as prairie tend to be in North America, the Central Valley of California is also a prairie. The Canadian Prairies occupy vast areas of Manitoba, Saskatchewan, Prairie is the French word for meadow, but the ultimate root is the Latin pratum. The formation of the North American Prairies started with the upwelling of the Rocky Mountains near Alberta, the mountains created a rain shadow that resulted in lower precipitation rates downwind, creating an environment in which most tree species will not tolerate. The parent material of most prairie soil was distributed during the last glacial advance that began about 110,000 years ago, the glaciers expanding southward scraped the landscape, picking up geologic material and leveling the terrain. As the glaciers retreated about 10,000 years ago, it deposited this material in the form of till, wind based loess deposits also form an important parent material for prairie soils. Tallgrass Prairie evolved over tens of thousands of years with the disturbances of grazing, native ungulates such as bison, elk, and white-tailed deer, roamed the expansive, diverse, plentiful grassland before European colonization of the Americas. For 10, 000-20,000 years native people used fire annually as a tool to assist in hunting, transportation, evidence of ignition sources of fire in the tallgrass prairie are overwhelmingly human as opposed to lightning. Humans, and grazing animals, were participants in the process of prairie formation. Fire has the effect on prairies of removing trees, clearing dead plant matter, fire kills the vascular tissue of trees, but not prairie, as up to 75% of the total plant biomass is below the soil surface and will re-grow from its deep roots. Without disturbance, trees will encroach on a grassland, cast shade, Prairie and widely spaced oak trees evolved to coexist in the oak savanna ecosystem. In spite of long recurrent droughts and occasional torrential rains, the grasslands of the Great Plains were not subject to soil erosion. The root systems of native prairie grasses firmly held the soil in place to prevent run-off of soil, when the plant died, the fungi, bacteria returned its nutrients to the soil. These deep roots also helped native prairie plants reach water in even the driest conditions, the native grasses suffered much less damage from dry conditions than the farm crops currently grown. Prairie in North America is usually split into three groups, wet, mesic, and dry and they are generally characterized by tallgrass prairie, mixed, or shortgrass prairie, depending on the quality of soil and rainfall. In wet prairies the soil is very moist, including during most of the growing season. The resulting stagnant water is conducive to the formation of bogs, wet prairies have excellent farming soil. The average precipitation amount is 10-30 inches a year, mesic prairie /ˈmiːzɪk/ has good drainage, but good soil during the growing season

46.
Drought
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A drought is a period of below-average precipitation in a given region, resulting in prolonged shortages in its water supply, whether atmospheric, surface water or ground water. A drought can last for months or years, or may be declared after as few as 15 days and it can have a substantial impact on the ecosystem and agriculture of the affected region and harm to the local economy. Annual dry seasons in the tropics significantly increase the chances of a drought developing, periods of heat can significantly worsen drought conditions by hastening evaporation of water vapour. Many plant species, such as those in the family Cactaceae, have drought tolerance adaptations like reduced leaf area, some others survive dry periods as buried seeds. Semi-permanent drought produces arid biomes such as deserts and grasslands, prolonged droughts have caused mass migrations and humanitarian crises. Most arid ecosystems have inherently low productivity, the most prolonged drought ever in the world in recorded history occurred in the Atacama Desert in Chile. Mechanisms of producing precipitation include convective, stratiform, and orographic rainfall, precipitation can be divided into three categories, based on whether it falls as liquid water, liquid water that freezes on contact with the surface, or ice. Drought are mainly course by in low rain areas, if these factors do not support precipitation volumes sufficient to reach the surface over a sufficient time, the result is a drought. Once a region is within drought, feedback mechanisms such as local arid air, hot conditions which can promote warm core ridging, within the tropics, distinct, wet and dry seasons emerge due to the movement of the Intertropical Convergence Zone or Monsoon trough. The dry season greatly increases drought occurrence, and is characterized by its low humidity, with watering holes, because of the lack of these watering holes, many grazing animals are forced to migrate due to the lack of water and feed to more fertile spots. Examples of such animals are zebras, elephants, and wildebeest, because of the lack of water in the plants, bushfires are common. Since water vapor becomes more energetic with increasing temperature, more water vapor is required to increase relative humidity values to 100% at higher temperatures, periods of warmth quicken the pace of fruit and vegetable production, increase evaporation and transpiration from plants, and worsen drought conditions. Drier and hotter weather occurs in parts of the Amazon River Basin, Colombia, winters during the El Niño are warmer and drier than average conditions in the Northwest, northern Midwest, and northern Mideast United States, so those regions experience reduced snowfalls. Conditions are also drier than normal from December to February in south-central Africa, mainly in Zambia, Zimbabwe, Mozambique, and Botswana. Direct effects of El Niño resulting in drier conditions occur in parts of Southeast Asia and Northern Australia, increasing bush fires, worsening haze, drier-than-normal conditions are also in general observed in Queensland, inland Victoria, inland New South Wales, and eastern Tasmania from June to August. As warm water spreads from the west Pacific and the Indian Ocean to the east Pacific, it causes extensive drought in the western Pacific. Singapore experienced the driest February in 2014 since records began in 1869, with only 6.3 mm of rain falling in the month, the years 1968 and 2005 had the next driest Februaries, when 8.4 mm of rain fell. Human activity can directly trigger exacerbating factors such as farming, excessive irrigation, deforestation

47.
Wildfire
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A wildfire or wildland fire is a fire in an area of combustible vegetation that occurs in the countryside or rural area. Fossil charcoal indicates that wildfires began soon after the appearance of terrestrial plants 420 million years ago, wildfire’s occurrence throughout the history of terrestrial life invites conjecture that fire must have had pronounced evolutionary effects on most ecosystems flora and fauna. Earth is an intrinsically flammable planet owing to its cover of vegetation, seasonally dry climates, atmospheric oxygen, widespread lightning. Wildfires can be characterised in terms of the cause of ignition, their properties, the combustible material present. Wildfires can cause damage to property and human life, but they have beneficial effects on native vegetation, animals. Many plant species depend on the effects of fire for growth, however, wildfire in ecosystems where wildfire is uncommon or where non-native vegetation has encroached may have negative ecological effects. Wildfire behaviour and severity result from the combination of such as available fuels, physical setting. Strategies of wildfire prevention, detection and suppression have varied over the years, one common and inexpensive technique is controlled burning, permitting or even igniting smaller fires to minimise the amount of flammable material available for a potential wildfire. Vegetation may be burned periodically to maintain species diversity and frequent burning of surface fuels limits fuel accumulation. Wildland fire use is the cheapest and most ecologically appropriate policy for many forests, fuels may also be removed by logging, but fuels treatments and thinning have no effect on severe fire behaviour. Wildfires can also be started in communities experiencing shifting cultivation, where land is cleared quickly and farmed until the soil loses fertility, forested areas cleared by logging encourage the dominance of flammable grasses, and abandoned logging roads overgrown by vegetation may act as fire corridors. The most common cause of wildfires throughout the world. In Canada and northwest China, for example, lightning operates as the source of ignition. In other parts of the world, human involvement is a major contributor, in China and in the Mediterranean Basin, human carelessness is a major cause of wildfires. In the United States and Australia, the source of wildfires can be traced both to lightning strikes and to human activities. Coal seam fires burn in the thousands around the world, such as those in Burning Mountain, New South Wales, Centralia, Pennsylvania and they can also flare up unexpectedly and ignite nearby flammable material. The spread of wildfires based on the flammable material present, its vertical arrangement and moisture content. Fuel arrangement and density is governed in part by topography, as land shape determines factors such as available sunlight, overall, fire types can be generally characterized by their fuels as follows, Ground fires are fed by subterranean roots, duff and other buried organic matter

Deforestation and increased road-building in the Amazon Rainforest are a significant concern because of increased human encroachment upon wild areas, increased resource extraction and further threats to biodiversity.

Hay is grass, legumes, or other herbaceous plants that have been cut, dried, and stored for use as animal fodder, …

Good quality hay is green and not too coarse, and includes plant heads and leaves as well as stems. This is fresh grass/alfalfa hay, newly baled.

Poor quality hay is dry, bleached out and coarse-stemmed. Sometimes, hay stored outdoors will look like this on the outside but still be green inside the bale. A dried, bleached or coarse bale is still edible and provides some nutritional value as long as it is dry and not moldy, dusty, or rotting.

Horses eating hay

These round bales have been left in the field for many months, perhaps more than a year, exposed to weather, and appear to be rotting. Not all animals can safely eat hay with rot or mold

Engraving based on a drawing by Champlain of his 1609 voyage. It depicts a battle between Iroquois and Algonquian tribes near Lake Champlain

Iroquois conquests 1638–1711

Map showing dates Iroquois claims relinquished, 1701-1796. Note: In the 1701 Nanfan Treaty, the Five Nations abandoned their nominal claims to "beaver hunting" lands north of the Ohio in favor of England; however, these areas were still de facto controlled by other tribes allied with France.

In this view of an alpine tree line, the distant line looks particularly sharp. The foreground shows the transition from trees to no trees. These trees are stunted in growth and one-sided because of cold and constant wind.